Re: Fix for SLOW PPP Bug

Christoph Lameter (04214986055-0001@t-online.de)
Thu, 11 Apr 1996 01:27:05 -0700 (PDT)


Sorry Linus I am on vacation in Germany a continent away from my
development machines. No chance of doing anything right now.

Perhaps somebody else can test it?

Sorry for the delay in responding.

On Mon, 8 Apr 1996, Linus Torvalds wrote:

>
>
> On 6 Apr 1996, Christoph Lameter wrote:
> >
> > I have tried to isolate when this bug was introduced and found that
> > 1.3.72 works fine but 1.3.73 has the problem. I noticed some ACK changes
> > in net/ipv4/tcp.c and made some diffs to revert those changes.
> >
> > I applied the following patch to 1.3.73 and 1.3.84. The bug disppeared in both
> > Kernel versions.
>
> Could you check if this more minimal patch does the same thing? (against
> a clean 1.3.84)
>
> int linux/include/net/tcp.h, line 207 or so, remove the two lines that say
>
> if (window >= MAX_WINDOW/2)
> return 0;
>
> Does that much smaller diff also make the performance ok again too?
>
> Linus
>
>